/*
 * Copyright (c) 2004-2022, University of Oslo
 * All rights reserved.
 *
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 * modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this
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 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * Neither the name of the HISP project nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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package org.hisp.dhis.period;

import static org.junit.jupiter.api.Assertions.assertEquals;

import java.util.List;
import org.joda.time.DateTime;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

/**
 * @author Lars Helge Overland
 */
class YearlyPeriodTypeTest {

  private DateTime startDate;

  private DateTime endDate;

  private DateTime testDate;

  private CalendarPeriodType periodType;

  @BeforeEach
  void before() {
    periodType = new YearlyPeriodType();
  }

  @Test
  void testGetPeriodTypeEnum() {
    assertEquals(PeriodTypeEnum.YEARLY, periodType.getPeriodTypeEnum());
    assertEquals(PeriodTypeEnum.YEARLY.getName(), periodType.getName());
  }

  @Test
  void testCreatePeriod() {
    testDate = new DateTime(2009, 8, 15, 0, 0);
    startDate = new DateTime(2009, 1, 1, 0, 0);
    endDate = new DateTime(2009, 12, 31, 0, 0);
    Period period = periodType.createPeriod(testDate.toDate());
    assertEquals(startDate.toDate(), period.getStartDate());
    assertEquals(endDate.toDate(), period.getEndDate());
    testDate = new DateTime(2009, 4, 15, 0, 0);
    period = periodType.createPeriod(testDate.toDate());
    assertEquals(startDate.toDate(), period.getStartDate());
    assertEquals(endDate.toDate(), period.getEndDate());
  }

  @Test
  void testGetNextPeriod() {
    testDate = new DateTime(2009, 8, 15, 0, 0);
    Period period = periodType.createPeriod(testDate.toDate());
    period = periodType.getNextPeriod(period);
    startDate = new DateTime(2010, 1, 1, 0, 0);
    endDate = new DateTime(2010, 12, 31, 0, 0);
    assertEquals(startDate.toDate(), period.getStartDate());
    assertEquals(endDate.toDate(), period.getEndDate());
  }

  @Test
  void testGetPreviousPeriod() {
    testDate = new DateTime(2009, 8, 15, 0, 0);
    Period period = periodType.createPeriod(testDate.toDate());
    period = periodType.getPreviousPeriod(period);
    startDate = new DateTime(2008, 1, 1, 0, 0);
    endDate = new DateTime(2008, 12, 31, 0, 0);
    assertEquals(startDate.toDate(), period.getStartDate());
    assertEquals(endDate.toDate(), period.getEndDate());
  }

  @Test
  void testGeneratePeriods() {
    testDate = new DateTime(2009, 8, 15, 0, 0);
    List<Period> periods = periodType.generatePeriods(testDate.toDate());
    assertEquals(11, periods.size());
    assertEquals(periodType.createPeriod(new DateTime(2004, 1, 1, 0, 0).toDate()), periods.get(0));
    assertEquals(periodType.createPeriod(new DateTime(2005, 1, 1, 0, 0).toDate()), periods.get(1));
    assertEquals(periodType.createPeriod(new DateTime(2006, 1, 1, 0, 0).toDate()), periods.get(2));
    assertEquals(periodType.createPeriod(new DateTime(2007, 1, 1, 0, 0).toDate()), periods.get(3));
    assertEquals(periodType.createPeriod(new DateTime(2008, 1, 1, 0, 0).toDate()), periods.get(4));
    assertEquals(periodType.createPeriod(new DateTime(2009, 1, 1, 0, 0).toDate()), periods.get(5));
    assertEquals(periodType.createPeriod(new DateTime(2010, 1, 1, 0, 0).toDate()), periods.get(6));
    assertEquals(periodType.createPeriod(new DateTime(2011, 1, 1, 0, 0).toDate()), periods.get(7));
    assertEquals(periodType.createPeriod(new DateTime(2012, 1, 1, 0, 0).toDate()), periods.get(8));
    assertEquals(periodType.createPeriod(new DateTime(2013, 1, 1, 0, 0).toDate()), periods.get(9));
    assertEquals(periodType.createPeriod(new DateTime(2014, 1, 1, 0, 0).toDate()), periods.get(10));
  }

  @Test
  void testGenerateLast5Years() {
    testDate = new DateTime(2009, 8, 15, 0, 0);
    List<Period> periods = new YearlyPeriodType().generateLast5Years(testDate.toDate());
    assertEquals(5, periods.size());
    assertEquals(periodType.createPeriod(new DateTime(2005, 1, 1, 0, 0).toDate()), periods.get(0));
    assertEquals(periodType.createPeriod(new DateTime(2006, 1, 1, 0, 0).toDate()), periods.get(1));
    assertEquals(periodType.createPeriod(new DateTime(2007, 1, 1, 0, 0).toDate()), periods.get(2));
    assertEquals(periodType.createPeriod(new DateTime(2008, 1, 1, 0, 0).toDate()), periods.get(3));
    assertEquals(periodType.createPeriod(new DateTime(2009, 1, 1, 0, 0).toDate()), periods.get(4));
  }

  @Test
  void testGetRewindedDate() {
    assertEquals(
        new DateTime(2020, 1, 15, 0, 0).toDate(),
        periodType.getRewindedDate(new DateTime(2023, 1, 15, 0, 0).toDate(), 3));
    assertEquals(
        new DateTime(2022, 1, 1, 0, 0).toDate(),
        periodType.getRewindedDate(new DateTime(2020, 1, 1, 0, 0).toDate(), -2));
  }
}
